My stock one broke off inside the bolt and I was unable to remove it to replace just the knob. The screw in the back of the bolt is impossible to remove, it must me thread locked. (even tried turning it to the right after trying lefty for so long) Ended up breaking the slot on the head of the screw itself with the screwdriver. Knob seems slightly shorter than the stock knob. It almost hits the top 'sight rail' of my 2005 pilot ACS.